I've been trying to find a good reason to buy a none OEM exhaust for my A6 2.7T but I have not found a good one yet. I would like to get an aftermarketexhaust to gain power but no one is advertising good information about why I should get their exhaust.

APR does not show any dynos or say anything about any gains in the description of their exhaust for the A6.
Milte through stratmospherEmentions a "nice gain"? but I couldn't find any details.

Any exhausts recommnendations out there for the A6with dynos to back it up?

Gracias